unless I was getting a custom made one I'd stick with a slotted Inbred. Can't go wrong really.
BTW the steel one is stiffer under pedalling and will fit bigger tyres a bit more comfortably than the Ti.

I tried for ages to get an Optimus. Got fed up with lack of communication from Vassago about when they might/might not produce some more
I loved my Jabberwocky, but then had a (steel) On-one to compare - the Inbred 29er suffered fewer pedal strikes and spun out less on (ss) climbs.